Chalk Hills flora (Pliocene of the United States)

Where: Storey County, Nevada (39.3° N, 119.6° W: paleocoordinates 39.5° N, 118.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Coal Valley Formation, Pliocene (5.3 - 2.6 Ma)

Environment/lithology: lacustrine

• Diatomite

Size class: mesofossils

Preservation: mold/impression, original carbon

Collection methods: bulk,

Primary reference: D.I. Axelrod. 1962. A Pliocene sequoiadendron forest from western Nevada. University of California Publications in Geological Sciences 39(3):195-268 [B. Tiffney/J. Fosdick/J. Fosdick]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35922: authorized by Bruce Tiffney, entered by Julia Fosdick on 10.01.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Coniferales - Cupressaceae
Pinopsida
 Pinales - Pinaceae
Abies concoloroides Brown 1940 fir
Pinus florissanti Lesquereux 1883 pine
Pinus wheeleri Cockerell 1908 pine
Angiospermae
 Ranunculales - Berberidaceae
 Saxifragales - Grossulariaceae
 Malpighiales - Salicaceae
Populus eotremuloides Knowlton 1898 poplar
Populus pliotremuloides Axelrod 1937 poplar
 Fagales - Fagaceae
Quercus simulata Knowlton 1898 oak
 Fagales - Juglandaceae
Carya ovata hickory
 Fagales - Betulaceae
Betula thor Knowlton 1926 birch
 Rosales - Pomaceae
 Rosales - Rhamnaceae
Rhamnus precalifornica Axelrod 1939 buckthorn
 Rosales - Rosaceae
Dicotyledoneae
 Ericales - Ericaceae
Arbutus menziesii Pursh 1813 madrone